Improvement in cokn-plouges



J. M. CLARK.

Shovel-Plow.

Patented June 11 1867.

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Letters No. 65,725, dated June 11, 1867.

IMPROVEMENT IN GORN-PLOUGHS.

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TO ALL WHOM IT -MAY CONCERN: I

Be it known that I, JOHN M. CLARK, of Somervillo, in Butler county, inthe State of Ohio, have'invented a new and useful Improvement inCorn-Ploughs; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, and the letters of reference marked.

thereon.

Figure 1 represents my improved plough complete. J

Figure 2 represents the plough adjusted as a gang-plough.

Figure 3 represents the metal portion of the plough.

Figure 4 is a portion of the beam and its attachments.

Figure 5 is the ratchet and latch for adjusting the draw-bars.

In the accompanying drawings, A. A denote the standards, connectedtogether by the adjustable crossbraces 13 B, by means of bolts [1 a a a.On the inner sides of the standards there brackets or staples b 6,through which the handles 0 C project; and (Z d indicate series of holesin the standards for the purpose of adjusting the braces B B for varyingthe position of the plough and the beam D. The beam D is connected withthe braces B B by means of a bolt, 0, and nut, a washer,f, beinginterposed between the braces, as represented. The handles C C areconnected with the beam by straps of iron and bolts g, which serve ashinges, allowing the handles to be adjusted laterally when the ploughsare adjusted towards or from each other. A rod, it, passes through thebeam D and handles 0 C, which aids the hinges at g in keeping the beam Din proper position. Fig. 5 represents a ratchet and latch, to beconnected with the lower front portion of the beam, and serves to fastenthe adjustable draw-bars iiin lifi'erent positions to correspond withthe several adjustments of the braces B B, beam D, and standards A A.These draw-bars connect with the standards near-the plonghs, by means offixed hooks and loops in the bars 2' z. The latch is so hinged as to beremoved in the are of a circle out from its place under the beam D,which will admit of the adjustment of the link j, which rests upon theratchet and is connected withthe draw-bars. The front end of the beam isprovided with the upright bars a a, perforated with holes, through whicha wooden pin can be inserted to hold the tongue k at any desiredelevation. The rearcnd of the tongue has an iron strap secured" upon it,seen at l, with a hole extending through it, by

which meahs it is connected with the end of the beam, which has asuitable detent extending up sutficiently'for.

the purpose. Connected with the detent 222 there is a bent metal guard,0, under the end of which the tongue extends, when the detent is enteredin the hole through the end of the tongue. The object of thisconstruction is to form a substantial fastening for the tongue to drawthe plough by, but which will, in the eveiit that the ploughs areobstructed by an obstacle which would strain or break them, cause thewooden pin n to break and wholly detach the team, with the tongue anddouble-trees, from the plough.

The plough proper is constructed of a single sheet of metal, representedin fig. 3, and the circular portion is bent up to form a cutter andprotector, as indicated in the drawings.

In fig. 1 the plouglis are adjusted for ploughing corn, by causing oneof the ploughs to run on each side of the corn rows, or between therows; and in fig. 2 the ploughs are adjusted so thatv theright-handplough is in rear of the other, and by substituting a left-hand ploughfor the right-hand plough P, in fig. 2, the plough at P would turn theearth into the furrow of the plough P, like a gang-plough. In adjustingthe ploughs as represented in fig. 2, the longest drag-bar 2' would beconnected with the standard of plough P, and the short bar or rod 2'with the standard of plough P, and the latch over the ratchet (fig. 5)would be removed, and the link j adjusted into a proper notch to causethe rods or drag-burst 2' to perform their functions of bracing theplough standards A A, and strengthening the whole structure. Inadjusting the ploughs to the position seen at fig. 2, the braces 13 Bare changed into the adjustment represented in this figure, and the twothick washers y yare inserted on the bolts, between the standards andthe cross-braces B B, near the top of the standards.

Having fully described my improvements in cornploughs what I claimtherein as of my invention, and desire to secure by Letters Patent, is

1, The adjustablecross-braces 1313, connected with the rear cud of thebeam D, in combination with the standards A A, constructed, arranged,and operating conjointly in'the manner and for the purpose specified.

2. The combination of the ratchet and latch represented infig. 5, withthe adjustable link j and drew-bai s 'i 2', arranged in the manner andfor the purpose described.

3. The guard o and detent m, in combination with the tongue in, bars :1,operating substantially as and for the purpose described.

4. The construction of the ploughs of a. single sheet of met-o1 in themannr represented in fig. 3, for the purpose described.

In testimony whereof I have hereunto set my hand this 7th day ofFebruary, 1857.

JOHN M. CLARK.

and Wooden pin '12, arranged and Witnesses:

H. P. K. Peon, A. L. PECK

